EDIT

  $form['redListField'] = array(

      '#type' => 'fieldset',

      '#title'	=>t('Redlist Attributes'),

      '#collapsible' => TRUE,

      '#collapsed' => TRUE,

    );

  $form['redListField']['csvExportOptions'] = array(

        $form['redListField']['csvExportOptions'][$subform_id] = array(

  $form['regionFilter'] = array(

    '#type' => 'fieldset',

    '#title' => t('Geographical filter'),

    '#collapsible' => TRUE,

    '#collapsed' => TRUE,

    );

  //TODO: #title value needs to be fetched from 'area_filter_country' 

  $form['regionFilter']['country'] = array (

    '#type' => 'checkbox',

    '#title' => 'Germany',

    '#attributes' => array('name' => 'area',

                            'id' => 'checkall',

                            'value' => variable_get('area_filter_country')

     ),

    );

  //GermanFederalStates

  $nameRelationshipTypeOptions = cdm_Vocabulary_as_option(variable_get('area_filter_state'));

  $form['regionFilter']['area'] = array(

    '#type' => 'checkboxes',

    '#description' =>t('Select an area to filter the list of taxa'),

    '#options' => $nameRelationshipTypeOptions,

    '#attributes' => array('name' => 'area',

                            'id' => 'area',

      ),

    );

  $form['#action'] = url(variable_get('cdm_csv_export_webservice_url'));

/**

 * Implements Admin configuration hook_menu().

 */

function cdm_csv_export_menu() {

 $items = array();

 $items['admin/config/cdm_dataportal/csvexport'] = array(

   'title' => 'CDM CSV Export',

   'description' => 'Settings of CSV Export module.',

   'page callback' => 'drupal_get_form',

   'page arguments' => array('cdm_csv_export_admin'),

   'access arguments' => array('access administration pages'),

   'type' => MENU_NORMAL_ITEM,

 );

 return $items;

}

/**

 * Generate the HTML form for the CSV Export Settings.

 */

function cdm_csv_export_admin() {

 $form['cdm_csv_export_webservice'] = array(

   '#type' => 'fieldset',

   '#title' => t('CDM CSV Export web service'),

   '#collapsible' => TRUE,

   '#collapsed' => FALSE,

   '#description' => t('<em>CDM Server</em> makes the dialogue possible with

      <em>CDM Data Portal</em> thanks to its web services.'),

 );

 $form['cdm_csv_export_webservice']['cdm_csv_export_webservice_url'] = array(

   '#type' => 'textfield',

   '#title' => t('CSV Export web service URL') . ':',

   '#description' => t('This is the URL to the CDM-Server webservice exposing its controller

      e.g. <em>"http://localhost:8080/csv/exportRedlist"</em>'),

   '#default_value' => variable_get('cdm_csv_export_webservice_url', NULL),

 );

 // ---- Regional Filter ---- //

 $form['csv_export_area_filter'] = array(

   '#type' => 'fieldset',

   '#title' => t('CDM CSV Export Area Filter'),

   '#collapsible' => TRUE,

   '#collapsed' => FALSE,

   '#description' => t('The <em>Area Filter</em> can be freely configured to the need 

       of the specific <em>CDM Data Portal</em> and its catchment area. Right now it will 

       be only distinguished between two levels. If necessary it can be programmatically

       extended for a third level e.g. "continent level".'),

 );

 $form['csv_export_area_filter']['area_filter_country'] = array(

   '#type' => 'textfield',

   '#title' => t('Country Level') . ':',

   '#description' => t('This is the UUID for the country level, in order to be able to filter Germany,

      you should paste e.g. <em>"7b7c2db5-aa44-4302-bdec-6556fd74b0b9"</em> in the above text field'),

   '#default_value' => variable_get('area_filter_country', NULL),

 );

 $form['csv_export_area_filter']['area_filter_state'] = array(

   '#type' => 'textfield',

   '#title' => t('State Level') . ':',

   '#description' => t('This is the UUID for the state level, in order to be able to filter the german federal states,

      you should paste e.g. <em>"44a448f9-f4ca-49f6-b58c-d27d8a69efdb"</em> in the above text field'),

   '#default_value' => variable_get('area_filter_state', NULL),

 );

 // ---- FEATURE TREE ---- //

 $form['taxon_profile'] = array(

   '#type' => 'fieldset',

   '#title' => t('Features'),

   '#collapsible' => TRUE,

   '#collapsed' => FALSE,

   '#description' => t("This section covers settings related to the taxon's

      <em>Feature Tree</em>. The <em>feature tree</em> are the taxon's

      features such as description, distribution, common names, etc. that Drupal

      will render at the taxon profile page."),

 );

 $featureTrees = cdm_get_featureTrees_as_options(TRUE);

 $form['taxon_profile']['feature_trees'][CDM_PROFILE_FEATURETREE_UUID] = array(

   '#type' => 'radios',

   '#title' => t('Taxon profile sections') . ':',

   '#default_value' => variable_get(CDM_PROFILE_FEATURETREE_UUID, UUID_DEFAULT_FEATURETREE),

   '#options' =>  $featureTrees['options'],

   // Comment @WA: because #options are sanitized in D7, it would

   // strip html like <fieldset>, so we put the fieldset in a suffix.

   '#field_suffix' => $featureTrees['treeRepresentations'],

   '#description' => t('Select the Feature Tree to be displayed at the taxon

      profile. Click "Show Details" to see the Feature Tree elements.'

   ),

 );

 return system_settings_form($form);

}